Small Cats

Question
Can you please tell me of a breed of cat which stays small forever and where I can buy one?  Thank you

Answer
In what way small? Do you mean little like a kitten or slender like a Siamese or Oriental. Or short, like a Munchkin.

Actually, many breeds are small and many breeds will have a runt kitten that will not get very big.
In general no, there is no specific breed that stays tiny.

Regards,
Barb